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f th coefficient of 2nd, 3rd, 4th terms in the expansion (1+x)2n are in A.P., show that 2n2-9n+7=0...

Asked by aryan-Srivastava 21st March 2014, 12:52 PM
Answered by Expert
Answer:
Answered by Expert 21st March 2014, 2:57 PM
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